Wastewater operator continuing education
Primary Clarifiers: Withdrawal Rate and Septicity
Counts in Idaho (no pre-approval required)Pump sludge out of the primary too slowly and it turns septic; pump it too fast and you send water to the digester. This hour covers setting the withdrawal rate and protecting the processes downstream.
Course summary, as it appears on your certificate
To provide wastewater operators with a practical understanding of primary clarifier operation focusing on sludge withdrawal rate, septicity risks, and operational decision-making to optimize clarifier performance and protect downstream processes.
Level 1 — what it is and why — the foundations, for operators new to the subject or wanting a refresher
Credit awarded: 1 hour — Technical
The Idaho course number is issued by the Agency for this course and is printed on your certificate.
Reviewed by: Robert Risley, Class 1 Wastewater Operator — reviewed November 2026
AquaCert does not mark its own homework: a licensed operator reviews the content and the course cannot be sold while that review is out of date.
One hour of study is one hour of credit. Your certificate reports the hours, which is what Idaho records against your renewal.
What's included
- Self-paced online coursework you can start, pause, and resume anytime
- Short questions along the way, and a short final quiz to pass for your certificate (retake it as often as you need)
- An official certificate of completion (PDF) with a public verification code
- Progress saved to your My Learning dashboard
One-time payment · lifetime access to this course
About 73 minutes of video · 1 hour
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Full refund within 7 days if you have not completed the course — refund policy.
Training a team? Buy seats for your operators — card or purchase order, with a completion record you can export.
Can your plant pay? See how, with a request to print for your supervisor.